The failure mechanism of diamond like coatings prepared by the filtered cathodic arc technique for minting application

Wilson Lin, Ming Sheng Leu, Chung Kwei Lin, Cherng Yuh Su

研究成果: 雜誌貢獻文章同行評審

5 引文 斯高帕斯(Scopus)

摘要

The failure mechanisms of diamond like carbon (DLC) coatings prepared by filtered cathodic arc deposition technique for proof mint applications are investigated in the present study. The lifetime of the proof minting dies coated with DLC coatings is extended ∼ 8 and 4 times compared to that of un-coated and Cr-plated dies, respectively. The DLC coatings maintain a high degree of surface smoothness after coining process. The surface roughness of DLC did not show noticeable effect on the failure mechanisms of the DLC coating. The failure mechanisms of DLC coating for coining process are (1) plastic deformation of substrates that results in die sinking and/or die settling (necking expansion), (2) microcracks and local DLC coating breakdown due to the surface pin hole of DIN 2550 substrate that decrease the adhesion strength, and (3) inclusions on the blank that result in high-stress abrasion and/or impact wear.
原文英語
頁(從 - 到)4430-4435
頁數6
期刊Surface and Coatings Technology
201
發行號7 SPEC. ISS.
DOIs
出版狀態已發佈 - 12月 20 2006
對外發佈

ASJC Scopus subject areas

  • 化學 (全部)
  • 凝聚態物理學
  • 表面和介面
  • 表面、塗料和薄膜
  • 材料化學

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